135399673 has 2 divisors, whose sum is σ = 135399674. Its totient is φ = 135399672.

The previous prime is 135399659. The next prime is 135399701. The reversal of 135399673 is 376993531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128414224 + 6985449 = 11332^2 + 2643^2 .

It is a cyclic number.

It is not a de Polignac number, because 135399673 - 2¹³ = 135391481 is a prime.

It is not a weakly prime, because it can be changed into another prime (135399623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67699836 + 67699837.

It is an arithmetic number, because the mean of its divisors is an integer number (67699837).

Almost surely, 2^135399673 is an apocalyptic number.

It is an amenable number.

135399673 is a deficient number, since it is larger than the sum of its proper divisors (1).

135399673 is an equidigital number, since it uses as much as digits as its factorization.

135399673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 459270, while the sum is 46.

The square root of 135399673 is about 11636.1365151841. The cubic root of 135399673 is about 513.4985305820.

The spelling of 135399673 in words is "one hundred thirty-five million, three hundred ninety-nine thousand, six hundred seventy-three".